How Measure Gutter Size

The steeper a roof s pitch the more windblown rain it can collect.

How measure gutter size.

Measure your gutter across the top from the back where the gutter meets the home to the outer edge. Multiply drainage area by 1 3. Use your tape measure to determine the length of the twine marking down this calculation. How do you calculate gutter size.

Then use the chart below to see what size gutter you need. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. Find the width of the gutters. Place a sturdy 20 ft 6 1 m ladder on 1.

Calculating the drainage area of a roof. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted. Place a sturdy 20 ft 6 1 m ladder against the roof and climb. 5 10 pack kit 40.

K style sizes will typically range from 5 to 6. Adjusting for pitch and rainfall. 5 inch 5 520 square feet. How to measure downspouts.

Gutter size is determined by measuring across the top of the gutter to help you understand gutter measurement and dimensions here is a relative comparison in size between 2 3 inch downspouts vs. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Download our free gutter guide for more helpful information. 5 inch standard k style gutter shop 5 gutterbrush.

7 and greater are appropriate for churches and larger commercial buildings. 6 inch 7 960 square feet. How to measure gutters method 1 of 3. Hold an extended tape measure at the end of the level that is not touching the surface of the roof.

Move the tape measure so its blade is sitting plumb against the end of the level. Measure length of twine mark the measurement with a piece of tape and then pull the twine off of the other end of the gutter. As a general rule egutter recommends for roof areas that exceed 2800 square feet a 6 k style size with a 3 x 4 downspout size would be appropriate. If your gutter is 5 inches wide or less you ll need our 5 inch kit.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. 12 inches or more.